In a bit of a surprise move, the mHealth Regulatory Coalition has asked the U.S. Food and Drug Administration to revamp and republish its proposed guidance for mobile medical apps--but as a second draft, not a final regulation.

MRC made the request in a letter, crafted by founding member and attorney Bradley Thompson.

"[C]ore elements cannot simply be cleaved off," Thompson writes. "[T]he integrity of the guidance system requires that FDA give public comments serious, mature consideration and respond with appropriate modifications, not just promises of future action."